柱塞泵工作时,柱塞做()运动。
参考答案:往复
按照《母婴保健法》的规定,必须经本人同意并签字,本人无行为能力的,应当经其监护入同意并签字的手术或治疗项目是
A.产前检查、结扎
B.终止妊娠、结扎
C.产前检查、中止妊娠
D.产前诊断、结扎
E.产前诊断、中止妊娠
There is no doubt ______ he said at yesterday’s meeting was true.
A.what
B.that
C.that what
D.what that