以PD140为例，有声报警器的英文表示不正确的是（ ）。
A: audible alarm
B: sensitivity adjustment
C: audible alarm ear-piece socket
D: sensitive detection area
A: audible alarm
B: sensitivity adjustment
C: audible alarm ear-piece socket
D: sensitive detection area
举一反三
- 以PD140为例，无声报警器的英文表示不正确的是（ ）。 A: audible alarm B: sensitivity adjustment C: audible alarm ear piece socket D: sensitive detection area
- I bought an alarm clock with a(n) ______ dial, which can be seen clearly in the dark. A: supersonic B: luminous C: audible D: amplified
- I bought an alarm dock with a(n)______ dial, which can be seen dearly in the dark. A: audible B: amplified C: supersonic D: luminous
- The noise outside was ______. A: too irritating that his speech was hardly audible B: so irritating so his speech was hardly audible C: so irritating that his speech was hardly audible D: so irritating enough that his speech was hardly audible
- The alarm management mode of DVR (non-manual alarm) includes ( ) A: External contact alarm mode B: External API alarm mode C: VMD alarm mode D: Timing alarm mode