October 15 th is my birthday, ________ I will never forget.

Taxes _________________ on or before April 15th. Payments __________________ to the government on or before April 15th. A: have to pay; must have been sent B: have to be paid; must be sent

He left Chongqing _____ the morning of the 15th. A: in B: on C: at D: for

October 15 th is my birthday, ________ I will never forget. A: A.when B: that C: what D: which

The First Belt and Road Forum for International Cooperation was held in Shanghai, from May 14th to 15th.

It gives us much pleasure to send you the goods asked for in your letter of April 15th.

N沟道增强型MOSFET工作在恒流区的条件是？ A: VGS>VGS(th)，VDS>VGS-VGS(th) B: VGS>VGS(th)，VDSVGS-VGS(th) C: VGSVGS(th)，VDS>VGS-VGS(th) D: VGS<VGS(th)，VDSVGS-VGS(th)

N沟道增强型MOS管工作在恒流区的条件是()(2) A: uGS&gt;uGS(th),uGD&gt; uGS(th) ; B: uGSGS(th),uGDGS(th) ; C: uGS&gt;uGS(th),uGDGS(th) ; D: uGSGS(th),uGD&gt;uGS(th) 。

N沟道增强型MOSFET工作在恒流区的条件是： A: UGS&gt; UGS(th), UDS&gt; UGS - UGS(th) B: UGS&gt; UGS(th), UDS&lt; UGS - UGS(th) C: UGS&lt;UGS(th), UDS&gt; UGS - UGS(th) D: UGS&lt; UGS(th), UDS&lt;UGS - UGS(th)

N沟道增强型MOSFET工作于放大工作状态时，要求UGSQ&gt;______, UDSQ&gt;______。 A: UGS(th) , UGSQ-UGS(th) B: UDSQ , UGSQ+UGS(th) C: UGS(th) , UGSQ D: UGS(th) , UGSQ+UGS(th)