微波(或称雷达波)是()的一种形式。
A.热辐射
B.热传导
C.电磁辐射
D.光热辐射
参考答案:C
具有健脾功效的药物是()
A.茯苓
B.薏苡仁
C.苍术
D.白术
E.白扁豆
The use of()between bags may lead to chafe and tearing of the bags.
A.strips of burlap
B.heavy paper
C.dunnage boards
D.strips of rope yarn