如果仪器没有给出结果，就做一个测试。
A: If the instrument does not give a result, do a test.
B: If the instrument fails to respond, do a test.
C: If the instrument fails to result, do a test.
A: If the instrument does not give a result, do a test.
B: If the instrument fails to respond, do a test.
C: If the instrument fails to result, do a test.
举一反三
- 如果结果不对称，需做校装测试。 A: If the result that you get is not symmetrical, do a rigging test. B: If you get an asymmetric result, do a rigging test.
- 在测试中不要改变工作步骤的顺序。 A: Do not change the sequence of the work steps in the test. B: Do not disturb the sequence of the work steps in the test C: Do not modify the sequence of the work steps in the test
- 如果值不同，请执行测试。 A: If the values are different, do this test. B: If the values differ, do following test. C: If the values are various, do this test.
- 在测试期间不要进行调整。 A: Do not make adjustments during this test. B: Do not make adjustments for the duration of this test. C: Do not make adjustments in the process of this test.
- jQuery类选择器可以通过指定的class查找元素语法是（） A: $（"test."） B: $（"test"） C: $（"#test"） D: $（".test"）