In a cell, approx 90% of ROS is generated by the ________.
In a cell, approx 90% of ROS is generated by the ________.
计算数值积分的梯形公式，以下正确的是 A: $\int_a^b {f(x)} dx \approx {{b - a} \over 2}[f(a) + f(b)]$ B: $\int_a^b {f(x)} dx \approx {{b - a} \over 2}[f(a) - f(b)]$ C: $\int_a^b {f(x)} dx \approx {{b + a} \over 2}[f(a) - f(b)]$ D: $\int_a^b {f(x)} dx \approx {{b + a} \over 2}[f(a) + f(b)]$
计算数值积分的梯形公式，以下正确的是 A: $\int_a^b {f(x)} dx \approx {{b - a} \over 2}[f(a) + f(b)]$ B: $\int_a^b {f(x)} dx \approx {{b - a} \over 2}[f(a) - f(b)]$ C: $\int_a^b {f(x)} dx \approx {{b + a} \over 2}[f(a) - f(b)]$ D: $\int_a^b {f(x)} dx \approx {{b + a} \over 2}[f(a) + f(b)]$
The ports are drilled in the liners at an angle of approx 202103 the result being that （） is given a rotary movement.
The ports are drilled in the liners at an angle of approx 202103 the result being that （） is given a rotary movement.
辛普森求积公式，以下正确的是 A: $\int_a^b {f(x)} dx \approx {{b - a} \over 6}[f(a) + 4f({{a + b} \over 2}) + f(b)]$ B: $\int_a^b {f(x)} dx \approx {{b - a} \over 6}[f(a) + 4f({{a + b} \over 2}) - f(b)]$ C: $\int_a^b {f(x)} dx \approx {{b - a} \over 6}[f(a) - 4f({{a + b} \over 2}) + f(b)]$ D: $\int_a^b {f(x)} dx \approx {{b + a} \over 6}[f(a) + 4f({{a - b} \over 2}) + f(b)]$
辛普森求积公式，以下正确的是 A: $\int_a^b {f(x)} dx \approx {{b - a} \over 6}[f(a) + 4f({{a + b} \over 2}) + f(b)]$ B: $\int_a^b {f(x)} dx \approx {{b - a} \over 6}[f(a) + 4f({{a + b} \over 2}) - f(b)]$ C: $\int_a^b {f(x)} dx \approx {{b - a} \over 6}[f(a) - 4f({{a + b} \over 2}) + f(b)]$ D: $\int_a^b {f(x)} dx \approx {{b + a} \over 6}[f(a) + 4f({{a - b} \over 2}) + f(b)]$
4、$R_{\rm i}=R_{\rm b}//r_{\rm {be}}\approx 2\rm{k\Omega}$。 A: Yes B: No
4、$R_{\rm i}=R_{\rm b}//r_{\rm {be}}\approx 2\rm{k\Omega}$。 A: Yes B: No
1. 利用全微分近似计算，并保留小数点后两位（1）${{\left( 1.04 \right)}^{2.02}}\approx $______ 。
1. 利用全微分近似计算，并保留小数点后两位（1）${{\left( 1.04 \right)}^{2.02}}\approx $______ 。
中国大学MOOC: In the U.K., it is customary to tip your waiter/waitress at the end of the meal, which is approx ________, though sometimes this is included in the bill.
中国大学MOOC: In the U.K., it is customary to tip your waiter/waitress at the end of the meal, which is approx ________, though sometimes this is included in the bill.
3、$R_{\rm i}=R_{\rm s}+R_{\rm b<br/>}//r_{\rm {be}}\approx 4\rm{k\Omega}$，。 A: Yes B: No
3、$R_{\rm i}=R_{\rm s}+R_{\rm b<br/>}//r_{\rm {be}}\approx 4\rm{k\Omega}$，。 A: Yes B: No
有些出口商品由于其本身特性，或因自然条件的影响或受包装和运输工具的限制，实际交货量往往不易符合原定的交货数量，为避免争议，可以订立数量机动幅度条款。其数量机动幅度主要有以下几种：（ ）。 A: "溢短装条款"(More or Less Clause) B: 在合同的数量前加一“约”字(about，circa，approx) C: 合同中末明确规定机动幅度 D: 品质增减条款
有些出口商品由于其本身特性，或因自然条件的影响或受包装和运输工具的限制，实际交货量往往不易符合原定的交货数量，为避免争议，可以订立数量机动幅度条款。其数量机动幅度主要有以下几种：（ ）。 A: "溢短装条款"(More or Less Clause) B: 在合同的数量前加一“约”字(about，circa，approx) C: 合同中末明确规定机动幅度 D: 品质增减条款
Conversation One (Questions 1-4) • Look at the note below. • You will hear a man making a call about a delivery. Telephone Message To: John White Date: 19/10/00 Patrick Fisher rang to say our new (1)........................................................ would be deliveredtomorrow. You need to tell Sarah Robbins, the (2)......................................., where to (3).................................................. them. Please phone Mr. Fisher on (4) ................................................................. if there are any problems. Conversation Two (Questions 5-8) • Look at the note below. • You will hear a man telephoning his personnel officer. Message Date: 12 November 00 From: Roshan Singh, (5) .......................................................... Department. Message: He has received an interesting job (6) .................................. and wants to discuss his (7)............................................... He has to reply by (8) ................................................morning range. Conversation Three (Questions 9-12) • Look at the note below. • You will hear a woman calling a company about a possible order. TELEPHONE ENQUIRY RECORD Caller: Julie Ventnor from Polareach Ltd She's interested in our (9) ........................................................... Requires details of our (10) ......................................... terms Total monthly order, approx. (11) £........................................................... Meeting on: 30th (12) ............................................................
Conversation One (Questions 1-4) • Look at the note below. • You will hear a man making a call about a delivery. Telephone Message To: John White Date: 19/10/00 Patrick Fisher rang to say our new (1)........................................................ would be deliveredtomorrow. You need to tell Sarah Robbins, the (2)......................................., where to (3).................................................. them. Please phone Mr. Fisher on (4) ................................................................. if there are any problems. Conversation Two (Questions 5-8) • Look at the note below. • You will hear a man telephoning his personnel officer. Message Date: 12 November 00 From: Roshan Singh, (5) .......................................................... Department. Message: He has received an interesting job (6) .................................. and wants to discuss his (7)............................................... He has to reply by (8) ................................................morning range. Conversation Three (Questions 9-12) • Look at the note below. • You will hear a woman calling a company about a possible order. TELEPHONE ENQUIRY RECORD Caller: Julie Ventnor from Polareach Ltd She's interested in our (9) ........................................................... Requires details of our (10) ......................................... terms Total monthly order, approx. (11) £........................................................... Meeting on: 30th (12) ............................................................