不含血管,具有丰富感觉神经末梢的结构是()
A.角膜
B.虹膜
C.脉络膜
D.晶状体
E.玻璃体
参考答案:A
(2013·银川高三一模)—Where is the post office?
—It's just over there, at the end of the street. You ________ not miss it.
A.can
B.must
C.may
D.should
1.5(6)A的1级电子式电能表(不经互感器)的允许启动电流值为()。
A、15Ma
B、9mA
C、24mA
D、6mA